A method for conveying auditable information regarding provenance of a product that is cryptographically accurate while retaining complete anonymity of product and participant on a blockchain includes: receiving a product identifier; generating a digital token by applying a hashing algorithm to the product identifier; generating an entry value by applying the hashing algorithm to a combination of an event identifier and the digital token; generating a digital signature by digitally signing a data package using a private key of a cryptographic key pair, where the data package includes at least a blockchain address, the event identifier, and the digital token; and transmitting the blockchain address, the digital signature, and the entry value to a node in a blockchain network.
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3. The method of claim 2, wherein the event identifier indicates sending of a product associated with the product identifier and the secondary public key is associated with a recipient entity of the product.
This invention relates to secure product distribution systems, specifically addressing the challenge of verifying product authenticity and recipient identity in supply chains. The method involves generating a unique event identifier for a product transaction, where the event identifier is linked to a product identifier and indicates the sending of the product. A secondary public key, associated with the recipient entity, is used to verify the recipient's identity and ensure secure delivery. The system also employs a primary public key, associated with the sender, to authenticate the sender's identity and authorize the transaction. The event identifier is cryptographically signed using the sender's private key, ensuring tamper-proof verification of the transaction details. This method enhances supply chain security by preventing unauthorized product distribution and ensuring only intended recipients receive the product. The system may also include additional steps such as generating a unique product identifier, associating the secondary public key with the recipient, and validating the recipient's identity before product dispatch. The invention is particularly useful in industries where product authenticity and secure delivery are critical, such as pharmaceuticals, luxury goods, and high-value logistics.
12. The system of claim 11, wherein the event identifier indicates sending of a product associated with the product identifier and the secondary public key is associated with a recipient entity of the product.
A system for secure product tracking and authentication involves generating and managing cryptographic keys to verify the authenticity and provenance of products. The system includes a primary public key associated with a product identifier and a secondary public key linked to a recipient entity. The primary public key is used to verify the authenticity of the product, while the secondary public key ensures secure communication or access control for the recipient. The system also includes an event identifier that records specific actions related to the product, such as its shipment or transfer. In this specific configuration, the event identifier indicates the sending of a product associated with the product identifier, and the secondary public key is tied to the recipient entity of the product. This ensures that only authorized recipients can verify the product's authenticity and track its movement through the supply chain. The system may also include a blockchain or distributed ledger to record these events immutably, enhancing transparency and security. The use of cryptographic keys and event identifiers helps prevent counterfeiting, tampering, and unauthorized access, ensuring that products reach their intended recipients securely.
14. The system of claim 10, wherein the one of the plurality of nodes in the blockchain network validates the digital signature using a public key of the cryptographic key pair.
A blockchain network system is used to securely validate digital signatures in a decentralized manner. The system includes multiple nodes that participate in validating transactions or data entries within the blockchain. Each node in the network is configured to verify the authenticity of digital signatures associated with transactions or data entries. To perform this validation, a node retrieves a public key from a cryptographic key pair associated with the entity that generated the digital signature. The node then uses this public key to cryptographically verify that the digital signature is valid, ensuring that the transaction or data entry has not been tampered with and was indeed signed by the legitimate owner of the corresponding private key. This validation process enhances the security and trustworthiness of the blockchain network by preventing unauthorized modifications and ensuring the integrity of the recorded data. The system may be applied in various blockchain-based applications, such as financial transactions, supply chain tracking, or smart contract execution, where secure and verifiable digital signatures are essential.
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February 16, 2021
November 29, 2022
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